[PATCH 1/3] x86: pass in size to early cmdline parsing

Path	csiph.com!goblin3!goblin2!goblin.stu.neva.ru!aioe.org!bofh.it!news.nic.it!robomod
From	Dave Hansen <dave@sr71.net>
Newsgroups	linux.kernel
Subject	[PATCH 1/3] x86: pass in size to early cmdline parsing
Date	Thu, 17 Dec 2015 23:00:02 +0100
Message-ID	<qGOKC-53D-1@gated-at.bofh.it> (permalink)
X-Original-To	linux-kernel@vger.kernel.org
X-Extloop1	1
X-Ironport-Av	E=Sophos;i="5.20,443,1444719600"; d="scan'208";a="619798463"
Sender	robomod@news.nic.it
List-ID	<linux-kernel.vger.kernel.org>
X-Mailing-List	linux-kernel@vger.kernel.org
Approved	robomod@news.nic.it
Lines	55
Organization	linux.* mail to news gateway
X-Original-Cc	Dave Hansen <dave@sr71.net>, dave.hansen@linux.intel.com, bp@suse.de, hpa@zytor.com, fenghua.yu@intel.com, yu-cheng.yu@intel.com
X-Original-Date	Thu, 17 Dec 2015 13:57:05 -0800
X-Original-Message-ID	<20151217215705.FB254BEB@viggo.jf.intel.com>
X-Original-Sender	linux-kernel-owner@vger.kernel.org
Xref	csiph.com linux.kernel:1294286

Show key headers only | View raw

From: Dave Hansen <dave.hansen@linux.intel.com>

We will use this in a few patches to implement tests for early
parsing.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: linux-kernel@vger.kernel.org
Cc: fenghua.yu@intel.com
Cc: yu-cheng.yu@intel.com
---

 b/arch/x86/lib/cmdline.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff -puN arch/x86/lib/cmdline.c~pass-in-cmdline-size arch/x86/lib/cmdline.c
--- a/arch/x86/lib/cmdline.c~pass-in-cmdline-size	2015-12-17 13:54:52.534928192 -0800
+++ b/arch/x86/lib/cmdline.c	2015-12-17 13:54:52.537928328 -0800
@@ -23,7 +23,8 @@ static inline int myisspace(u8 c)
  * Returns the position of that @option (starts counting with 1)
  * or 0 on not found.
  */
-int cmdline_find_option_bool(const char *cmdline, const char *option)
+static int __cmdline_find_option_bool(const char *cmdline,
+		int max_cmdline_size, const char *option)
 {
 	char c;
 	int len, pos = 0, wstart = 0;
@@ -37,7 +38,7 @@ int cmdline_find_option_bool(const char
 	if (!cmdline)
 		return -1;      /* No command line */
 
-	len = min_t(int, strlen(cmdline), COMMAND_LINE_SIZE);
+	len = min_t(int, strlen(cmdline), max_cmdline_size);
 	if (!len)
 		return 0;
 
@@ -82,3 +83,9 @@ int cmdline_find_option_bool(const char
 
 	return 0;	/* Buffer overrun */
 }
+
+int cmdline_find_option_bool(const char *cmdline, const char *option)
+{
+	return __cmdline_find_option_bool(cmdline, COMMAND_LINE_SIZE,
+			option);
+}
_
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH 1/3] x86: pass in size to early cmdline parsing Dave Hansen <dave@sr71.net> - 2015-12-17 23:00 +0100
  [PATCH 2/3] x86: test early command-line code Dave Hansen <dave@sr71.net> - 2015-12-17 23:00 +0100
  [PATCH 3/3] x86: fix early command-line parsing when matching at end Dave Hansen <dave@sr71.net> - 2015-12-17 23:00 +0100
  Re: [PATCH 1/3] x86: pass in size to early cmdline parsing Dave Hansen <dave@sr71.net> - 2015-12-17 23:10 +0100

csiph-web